Saw guard



Aug. '24 1926. 7 1,597,007

D N. BEATON ET AL SAW GUARD Filed July 8, 1924 m vsN ran 5 Jon/Au: NEIL .BEA TON ATTORNEYS Patented Aug. 24, 1925.

UNITED STATES DONALD NEIL BEATON AND ALLAN LAW, OF NOR-TH VANCOUVER, BRITISH COLUMBIA PATENT OFFICE.

CANADA.

SAW GUARD.

Application filed July 8,

Our invention relates to improvements in saw guards, the particular objects of which are to provide means which can be readily attached to the frame of a shingle or other machine and which will effectively screen the edge of the saw against the sawyers hands, further objects are to provide for the automatic displacement of the guard bythe discharging of a spalt when setting a new block in place for cutting, for the automatic replacement of the guard after the spalt has been discharged and also to provide for the positive displacement of the guard in case of overstrain thereon.

The invention consists essentially of a laterally curved vertical bar normally resting adjacent the cutting edge of the saw and pivotally mounted to swing outwards therefrom, as will be more particularly described in the following specification, in which Fig. 1 is a general view of our invention mounted upon a shingle machine.

Fig. 2 is a fractional plan view of same.

In the drawings like characters of reference indicate corresponding parts in each figure.

The numeral 1 indicates the bed of a shingle machine along which acarriage 2 having spur rolls 3 is adapted to run. 4 is a top frame member and 5 is the shingle saw. The numeral 6 indicates a shingle block which is fed between the spur rollers 8 to be presented for the cutting of shingles by the saw.

The numeral 7 indicates a bracket suitably mounted upon the machine and having a hinge bolt 8. The numeral 9 indicates a guard arm formed of a-straight member of flat metal 10 and an angular member 11, one of which overlaps the other, and connection is made between them by a bolt 12 and a wood pin 13 which may be readily broken in the event of an undue strain being suddenly imposed upon the guard arm whereby the member 11 becomes fulcrumed upon the member 10 about the bolt 12 to permit of the free passage past the edge of the saw of any spalt or block in case of emergency. The outer end of the member 10 is hingeingly mounted upon the bracket 7 by the bolt 8. The outer end of the member 11 is provided with a slot 14 for the purpose of adjustment. The guard generally indicated by the numeral 15 is formed with a vertical strip 1924. Serial No. 724,888.

of metal transversely curved to present a convex surface adjacent the cutting edge of the saw and is provided with an angular foot 16 by which it is secured with a pair of bolts 17 passing through the slot 14 of the member 11.

The numeral 18 indicates a bracket suitably mounted to the machine and having an angular stop 19 thereon which is provided with an end wall 20 and a side wall 21 against both of which thefoot of the guard is normally pressed by the tension of a coil spring 22 secured at one end to the machine and at the other end to a downward extension 23 of the bolt 12.

In order that the upper end of the guard 15 may be prevented from leaning towards the plane of the saw we provide an overhanging bracket 24 upon the upper frame member 4 as a stop therefore.

Having thus described the several parts of our invention we will now briefly explain its use.

Since the side edge of the saw is covered by the guard 15 the sawyer, may without danger take hold of each shingle as it is being cut from the block. When the spur rolls 3 are separated to discharge the spalt, i. e.

that portion of the block which is no longer large enough for the production of shingles,

the spalt falls against the guard causing it to swing outwardsagainst the tension of the spring 22 and as soon as the spalt is clear of the machine the guard automatically isv restored by its spring to normal position.

What we claim as our invention is:

1. A saw guard for shingle machines pro-- vided with a feed carriage and saw,"comprising a vertical guard member arranged to cover the cutting portion of the cutting edge of the saw in such a position as to expose the material to the cutting edge when fed towards one face of the saw and prevent manual access to such cutting edge at the opposite face of the saw and av mounting for the guard normally serving to hold the guard in operative position but yieldable to permit the guard to move in the aXial direction of the saw and away from the same when the guard is subjected to a predetermined strain.

2. A. saw guard for shingle machines provided with a feed carriage and saw, comprising a vertical guard member arranged to cover the cutting portion of the cutting edge of the saw in such a position as to expose the material to the cutting edge when fed towards one face of the saw and prevent manual access to such cutting edge at the opposite face of the saw, a bracket, aplate slidable on the bracket and connected to the lower end of the guard means for yieldably holding said plate and guard in operative position.

3. A saw guardfor shingle machines pro vided with a feed carriage and saw, comprising a vertical guard member arranged to cover the cutting portion of the cutting edge of the saw in such a position as to expose tlie material to the cutting edge when fed towards one face of the saw and prevent manual access to such cutting edge at the opposite face of the saw, a supporting bracket, a plate attached to the lower end of the guard and slidable on said bracket, stop flanges projecting upwardly from said plate and yieldable means for normally holding the plate andsaw guard in operative position.

f. A saw guard for shingle machines provided With a feed carriage and saw, comprising a vertical guard member arranged to cover the cutting portion of the cutting edge of the saw in such a position as to expose the material to the cutting edge when fed towards one face of the saw and .prevent manual access to such cutting edge at the opposite face of the saw, a bracket, provided with upstanding stop flanges, a plate slid'able on the bracket and attached to the lower end of the guard member, a stop member carried by the machine and positioned to engage the upper end of the guard member to limit inward movement thereof and means for releasably holding said plate andguard member in operative position.

5. In a shingle machine provided with a feed carriage and saw, a vertical guarc member mounted to have parallel movement to and from one side of the saw, spring means for holding the guard member adjacent the cuttlng edge of the saw, and means of June, 1924.

member, an arm upon which the guard member is hingedly mounted, said arm coinprising two members connected together in alignment, and permitting disrupting of such alignment when undue strain is imposed upon the guard member.

7. A saw guard for circular saws comprising a vertically disposed guard member positioned to extend upwardly along one side of the saw and to cover the cutting portion at said side, a bracket slidably supporting the lower end of said guard and means connected with the lower end ofsaid guard for sli dably holding the same in operative position. i

8. A structure according to claim 7, in which the said means consisting of, a plate, a bracket to which one end of said plate is pivoted, a second L-shaped plate having one arm pivoted to said first plate and normally disposed in alignment therewith, the re maining arm of said L-shaped plate being con ectedto the lower endof the saw guard and resilient means for yielda bly holding the connected portions of said plate in alignment. I

9. In a shingle saw guard, a pivotally mounted guard, a member projecting from the free end of said guard and forming therewith a passageway for the shingles, and yieldable means for adjusting sait guard towards or from the saw.

10. In a shingle saw guard, a saw frame, a guard .pivotally mountedat one end there of upon said saw frame, and a vertically disposed member projecting from the free end of said guard, said frame, guard and member forming the confines of, a passageway for the shingles.

Dated at Vancouver, B. C. this 9th day DONALD NEIL BEATVON. ALLAN LAW. 1 

